First here is the info about my motor/1986 johnson model JTLCDC and serial number is J7138963 and I am in Miami FL.I need to rebuild my carbs and I'm trying to decide if I can do it or just remove them and take to a shop.I'm reading my shop manual and it says I need orifice driver p/n 317002,Do I really? I'm a good/ok mechanic but have never done this and don't have special tools,air or anything to clean/soak them in.I have the rebuild kits(2) and could drop off and pick up for about $100.I could also buy a lot off beer for $100.what do you guys think?